仁爱版英语八年级下册《if引导的条件状语从句》讲解练习 1页

名师讲解：if 引导的条件状语从句 用 法 例 句 ① 主句为一般将来时态，if 从 句用一般现在时态（即主将从 现）。 We will stay at home if it rains tomorrow. 如果明天下雨，我将要呆在家。 ② 主句中含有情态动词，if 从 句用一般现在时态。 If you finish your homework, you can go home now. 如果你做完了作业，你现在可以回家了。 ③ 主句为祈使句，if 从句用一 般现在时态。 Don’t jump into the river if you feel very hot. 如果你感到很热，不要跳入河里。 ④ 主句为过去将来时，if 从句 用一般过去时态（如果涉及到 be 动词，一律都用 were）。此 时，表达的是和现实相反的推 测，用虚拟语气。 If I were you, I wouldn’t do it like that. 如果我是你，我就不会那么做的。 If you gave me some money, I would be very happy. 如果你给我一些钱，我就会很高兴的。 【边学边做】用括号内所给词的正确形式填空。 1. What will you buy if you ________（have）a lot of money? 2. If it ________（not snow）tomorrow, we will feel unhappy. 3. You mustn’t go to school if you ________（be）still in bed. 4. If he _______（be）at home at that time, he would know it. 5. Please show me the way if you ________（know）it. 6. You will hurt your teeth if you ________（eat）too much candy. 7. If you gave me a toy car, I _________（be）very happy. 8. I would get the prize if I _________（work）hard. 参考答案: 1 have 2 doesn’t 3 are 4 were 5 knew 6 were to eat 7 would be 8 worked